[seqfan] Re: Mystery sequence

[jean-paul allouche]

Dear Neil, dear all

It could also be a (voluntarily?) meaningless
combination of numbers: last year I co-organized
a summer school on combinatorics (that was called
"CombinatoireS" to emphasize the fact that there are
many subfields in "la combinatoire"); the poster is there:
http://combinatoires.imj-prg.fr
(we put sort of random numbers in the hope that
people would find an incredible unexpected formula
--or would search for ever and wouldn't dare asking...)

Not totally fair but slightly fun  :-)

Merry Christmas and a Happy New Year
best wishes
jp

Le 23/12/16 à 17:42, Neil Sloane a écrit :
> A friend just sent me a photo of a T-shirt she
> saw someone wearing in Mexico City today
>
> It has the numbers
>
>        2   3
>   5        7
>            11
> 13      15 16
> 17      19
>            23
>
> on it. So far, the primes plus 15 and 16
>
> New to me. I can send the photo if anyone wants to see it.
>
> Any ideas?
>
> --
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